Seoul National University · Environmental Science
Professor Rahim Shahrokhi's research lab specializes in sustainable geotechnical engineering and environmental soil remediation, focusing on innovative biological and chemical techniques to enhance soil properties and mitigate environmental contaminants. Key research directions include microbial-induced carbonate precipitation for soil stabilization and the development of advanced adsorbent materials for the removal of persistent pollutants like PFAS from contaminated soils. The lab integrates principles of soil mechanics, environmental chemistry, and materials science to design eco-friendly solutions for infrastructure resilience and environmental protection. Recent work emphasizes optimizing injection protocols for bioclogging and engineering novel clay-polymer composites for high-efficiency contaminant capture.
Figures are computed from collected data and may differ slightly.
Microbial-induced carbonate precipitation using urea hydrolysis is a relatively new improvement technique for granular soils. An important factor in achieving uniform calcite deposition (and hence consistent improvements in geomechanical properties) throughout the treated soil mass is the protocol adopted for injecting the reagents of ureolytic bacteria, urea and calcium. This paper reports a laboratory study investigating a technique to treat two loose medium quartz sands using different inject
Soils contaminated with per- and poly- fluoroalkyl substances (PFAS) require immediate remediation to protect the surrounding environment and human health. A novel animated clay-polymer composite was developed by applying polyethyleneimine (PEI) solution onto a montmorillonite clay-chitosan polymer composite. The resulting product, PEI-modified montmorillonite chitosan beads (MMTCBs) were characterized as an adsorptive soil amendment for immobilizing PFAS contaminants. The MMTCBs exhibited good
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